Lightdm doesn't change the login wallpaper to reflect the selected user's desktop wallpaper when the wallpaper is set to change throughout the day

[Marco Lackovic]

On Ubuntu 13.04 64 bit:

- open Settings / Appearance
- choose a specific wallpaper
- log out
- the wallpaper of the login screen is the selected user's wallpaper
- log in
- open Settings / Appearance
- choose the first wallpaper with a white clock icon over it representing a dynamic wallpaper which "changes throughout the day"
- log out

Expected behavior: the wallpaper of the login screen is the last used user's wallpaper
What happens instead: the wallpaper is the default purple one.
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ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
DistroRelease: Ubuntu 13.04
InstallationDate: Installed on 2013-04-25 (2 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
NonfreeKernelModules: wl
Package: unity-greeter 13.04.2-0ubuntu1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Tags: raring
Uname: Linux 3.8.0-19-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo tomcat7

[Marco Lackovic (marco-lackovic)]

apport information

[Marco Lackovic (marco-lackovic)]

apport information

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.